char *t_Str::strip(const char *chars, char *str, size_t len)
{
    len = strtrim(chars, str, len);

    if(!len)
        return str;

    return ifind(chars, str, len);
}   
Esempio n. 2
0
size_t CPLString::ifind( const std::string & str, size_t pos ) const

{
    return ifind( str.c_str(), pos );
}
Esempio n. 3
0
/* Implement the diskfs_lookup callback from the diskfs library.  See
   <hurd/diskfs.h> for the interface specification.  */
error_t
diskfs_lookup_hard (struct node *dp, const char *name, enum lookup_type type,
		    struct node **npp, struct dirstat *ds, struct protid *cred)
{
  error_t err;
  ino_t inum;
  int namelen;
  int spec_dotdot;
  struct node *np = 0;
  int retry_dotdot = 0;
  vm_prot_t prot =
    (type == LOOKUP) ? VM_PROT_READ : (VM_PROT_READ | VM_PROT_WRITE);
  memory_object_t memobj;
  vm_address_t buf = 0;
  vm_size_t buflen = 0;
  int blockaddr;
  int idx, lastidx;
  int looped;

  if ((type == REMOVE) || (type == RENAME))
    assert (npp);

  if (npp)
    *npp = 0;

  spec_dotdot = type & SPEC_DOTDOT;
  type &= ~SPEC_DOTDOT;

  namelen = strlen (name);

  if (namelen > FAT_NAME_MAX)
    return ENAMETOOLONG;
  
 try_again:
  if (ds)
    {
      ds->type = LOOKUP;
      ds->mapbuf = 0;
      ds->mapextent = 0;
    }
  if (buf)
    {
      munmap ((caddr_t) buf, buflen);
      buf = 0;
    }
  if (ds && (type == CREATE || type == RENAME))
    ds->stat = LOOKING;

  /* Map in the directory contents. */
  memobj = diskfs_get_filemap (dp, prot);

  if (memobj == MACH_PORT_NULL)
    return errno;

  buf = 0;
  /* We allow extra space in case we have to do an EXTEND.  */
  buflen = round_page (dp->dn_stat.st_size + DIRBLKSIZ);
  err = vm_map (mach_task_self (),
                &buf, buflen, 0, 1, memobj, 0, 0, prot, prot, 0);
  mach_port_deallocate (mach_task_self (), memobj);

  inum = 0;

  diskfs_set_node_atime (dp);

  /* Start the lookup at DP->dn->dir_idx.  */
  idx = dp->dn->dir_idx;
  if (idx << LOG2_DIRBLKSIZ > dp->dn_stat.st_size)
    idx = 0;                    /* just in case */
  blockaddr = buf + (idx << LOG2_DIRBLKSIZ);
  looped = (idx == 0);
  lastidx = idx;
  if (lastidx == 0)
    lastidx = dp->dn_stat.st_size >> LOG2_DIRBLKSIZ;

  while (!looped || idx < lastidx)
    {
      err = dirscanblock (blockaddr, dp, idx, name, namelen, type, ds, &inum);
      if (!err)
        {
          dp->dn->dir_idx = idx;
          break;
        }
      if (err != ENOENT)
        {
          munmap ((caddr_t) buf, buflen);
          return err;
        }

      blockaddr += DIRBLKSIZ;
      idx++;
      if (blockaddr - buf >= dp->dn_stat.st_size && !looped)
        {
          /* We've gotten to the end; start back at the beginning.  */
          looped = 1;
          blockaddr = buf;
          idx = 0;
        }
    }

  diskfs_set_node_atime (dp);
  if (diskfs_synchronous)
    diskfs_node_update (dp, 1);

  /* If err is set here, it's ENOENT, and we don't want to
     think about that as an error yet.  */
  err = 0;

  if (inum && npp)
    {
      if (namelen != 2 || name[0] != '.' || name[1] != '.')
        {
          if (inum == dp->cache_id)
            {
              np = dp;
              diskfs_nref (np);
            }
          else
            {
              err = diskfs_cached_lookup_in_dirbuf (inum, &np, buf);
              if (err)
                goto out;
            }
        }

      /* We are looking up "..".  */
      /* Check to see if this is the root of the filesystem.  */
      else if (dp == diskfs_root_node)
        {
          err = EAGAIN;
          goto out;
        }

      /* We can't just do diskfs_cached_lookup, because we would then
         deadlock.  So we do this.  Ick.  */
      else if (retry_dotdot)
        {
          /* Check to see that we got the same answer as last time.  */
          if (inum != retry_dotdot)
            {
              /* Drop what we *thought* was .. (but isn't any more) and
                 try *again*.  */
              diskfs_nput (np);
              mutex_unlock (&dp->lock);
              err = diskfs_cached_lookup_in_dirbuf (inum, &np, buf);
              mutex_lock (&dp->lock);
              if (err)
                goto out;
              retry_dotdot = inum;
              goto try_again;
            }
          /* Otherwise, we got it fine and np is already set properly.  */
        }
      else if (!spec_dotdot)
        {
          /* Lock them in the proper order, and then
             repeat the directory scan to see if this is still
             right.  */
          mutex_unlock (&dp->lock);
          err = diskfs_cached_lookup_in_dirbuf (inum, &np, buf);
          mutex_lock (&dp->lock);
          if (err)
            goto out;
          retry_dotdot = inum;
          goto try_again;
        }

      /* Here below are the spec dotdot cases.  */
      else if (type == RENAME || type == REMOVE)
        np = ifind (inum);

      else if (type == LOOKUP)
        {
          diskfs_nput (dp);
          err = diskfs_cached_lookup_in_dirbuf (inum, &np, buf);
          if (err)
            goto out;
        }
      else
        assert (0);
    }

  if ((type == CREATE || type == RENAME) && !inum && ds && ds->stat == LOOKING)
    {
      /* We didn't find any room, so mark ds to extend the dir.  */
      ds->type = CREATE;
      ds->stat = EXTEND;
      ds->idx = dp->dn_stat.st_size >> LOG2_DIRBLKSIZ;
    }